The repairs - which will be free - could include software updates as well as physical alterations, and some Range Rover Evoque models will need new tyres, a Jaguar Land Rover spokesman said.

In a statement, the car maker said: “Affected vehicles are being rectified to ensure the correct CO performance is dependably achieved.

“The modifications made to affected vehicles will be made free of charge and every effort will be made to minimise inconvenience to the customer during the short time required for the work to be carried out.”

The issue was identified by Jaguar Land Rover through routine internal testing, and subsequently reviewed with the Vehicle Certification Agency, a branch of the Department for Transport.

What the DVSA said

Neil Barlow, head of vehicle engineering at the Driver and Vehicle Standards Agency (DVSA), which administers vehicle recalls, said: “DVSA’s priority is to protect everyone from unsafe drivers and vehicles.

“This includes vehicles that are damaging our environment.

“Where new vehicles sold for use on British roads don’t conform to emissions standards, DVSA will work with other government agencies and manufacturers to ensure the vehicles are fixed as quickly as possible.”

Natalie Hitchins, head of home products and services at consumer group Which?, said: “Consumers must be able to fully trust the claims of car manufacturers, particularly after the emissions scandals of recent years.”

Concerns about vehicle emissions have grown since the Volkswagen diesel scandal emerged in September 2015.

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